Rotary engine.



No..667,|63. Patented 1an. 29, |9ol. .1. w. cALLAwAY.

ROTARY ENGINE. (Application nea Apr. 16, 1900.) (No Model.)

Wihjesses wylgegfor m: wams Pneus co. momuma, wramm'ou. o, c..

NITED STATES JAMES WV. CALLAWAY, OF MONTROSE, COLORADO, ASSIGNOR OF SEVEN- EIGHTHS TO EMILY L. A. CALLAWAY, MICHAEL A. CALLAWAY, JOSEPH A. CALLAWAY, JAMES W. CALLAWAY, JR., WILLIAM S. CALLAWAY, CHARLES C. CALLAWAY, AND LAURA L. CALLAWAY, OF SAME PLACE.

ROTARY ENGIN E.

SPECIFICATION forming part of Letters Patent No. 667,163, dated January 29, 1901.

Application filed April 16, 1900. Serial No. 13,083. (No model.)

To a/ZZ whowt it may concern:

Be itknown that I, JAMES W. CALLAWAY, a citizen of the United States, residing at Montrose, in the county of Montrose and State of Colorado, have invented a new and useful Rotary Engine, of which the following is a specification.

This invention relates to engines in general, and more particularly to that class of Huidro pressure engines known as rotary engines,

the object of the invention being to provide an engine of the expansion type in which there will be maintained a more even torque than is customary and in which the structure will be efficient and simple.

In the drawings forming a portion of the specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a View of the complete en- 2o gine, partly in side elevation and partly in section, and illustrating the positions of various parts during the operation of the engine. Fig. 2 is an elevation showing one end of one of the elementary parts of the coinplete engine and illustrating the arrangement of the lever which operates the abutment and i i indicating in dotted lines steam-feed channel.

Fig. 3 is a side elevation of one of the rotataf-,m-eie pistons. Fig. 4 is a side elevation of one 3o of the parts of the engine-casing and -which is in the form of a split ring to receive a movable abutment in its passage into operative relation to a piston-head. Fig. 5 is a face view of one of the disks which separate the elementary engines and illustrating the camgroove which operates the abutment of its respective elementary engine.

Referring now to the drawings, the present engine consists of a plurality of similar elementary engines, the rotatable members of which are mounted upon a common shaft and are adapted to receive steam alternately or successively at different points of rotation of the shaft. The movable parts of the engine are mounted upon a shaft 10, which is journaled in bearings 11, and these movable parts or rotatable elements consist of a number of rotary cylindrical pistons 12, 13, 14, and l5,

=\-..each of which has concentric grooves in its ends for the reception of packing-rings. En- 5o circling each rotary piston is a casing element in the form of a split ring 16, and between each pair of rings is disposed a disk, so that there is in effect a number of cylinders pro-f vided in axial alinement= the outermost cylinders having also disks to form heads therefor. These disks or cylinder-heads are shown at 18, 19, 20, 21, 22, 23, and 24, and have grooves in their faces which coperate with the grooves in the ends of the pistons to receive the pack- 6o ing-rings and prevent leakage. Between the rings 16 and the adjacent disks or heads there is disposed packing, and through the several rings and heads are passed bolts 26, which act to hold the rings and their heads in proper position. The openings of the several split rings aline, and in each of these openings is disposed a reciprocatory abutment 27. The abutments have a greater Width than the openings of the rings and are held at one side 7o of the openings by means of slots 28 in the faces of the disks or heads, these slots being disposed radially and receiving the edges of the abutments to form guideways therefor.

Fixed upon the shaft l0 and between the 75 heads 19 and 2() is a disk 30, while a similar disk 31 is fixed upon the shaft and disposed between the heads 22 and 23. These disks 30 and 31 have cam-grooves in their faces comprising iiattened portions, (shown at 32 in 8o Fig. 5,) and the attened portions are so arranged that they will lie at eqnidistant points of the rotation of the shaft, there being four of these flattened or cam portions.

In the face of the head 19, adjacent to the disk 30, is a radial slot 34, at the lower end of which is formed a chamber 35. In the chamber 35 is pivoted an arm 36, the free end of which is slid-ably connected with a reciprocatory rod 37 in the slot 34. The upper 9o end of the rod 37 terminates in a head 38, having a recess 39, in which is disposed the head 40 of a lever 41, pivoted between lugs 422L upon the head 19 upon a pin 42, and the outer end of which lever is bifurcated to receivea pin 43 upon the abutment 27 of the adjacent cylinder. The connection between the arm 36 and the rod 37 is in the form of a pin 44, which lies in the cam-groove of the disk 30. This cam-groove, with the excep- Lion of the flattened portion, is concentric with the shaft 10, and thus as the shaft is rot-ated the arm 3G will remain stationary until the pin 44 enters the iattened portion of the groove, when the pin will be drawn downwardly and will correspondingly move the rod 37 to tilt the lever 4l and raise the abutment. The upward movement of the abutment is while the pin is passing through the first half of the flat portion of the groove. The object of raising the abutment is to permit the passage of the fixed radially-extending head 45 of the piston beyond the abutment. After the head has passed the pin enters the latter half of the straight portion of the cam-groove and the abutmentis lowered to receive steam between it and the pistonhead.

To provide for supplying steam to the piston after the head has passed the abutment, a feed-channel is formed in the inner face of the head 19, and with this channel communicates a supply-pipe 46. The feed-channel is shown in dotted lines at 47 in Fig. 2 of the drawings and is arc-shaped and formed concentric with the piston 12. In one end of the piston is formed an inlet-port 47, which communicates with a feed-passage 48 in the piston and opens radially thereof in the rear of the piston-head Thus after the pistonhead has passed the abutment and the latterhas been lowered'into place the feed-port will register with the feed-passage in the head 19 and steam will flow into the space between the abutment and the piston-head and will expand and drive the piston. The feed-passage in the cylinder-head is of such length and arrangement that the steam is fed through one-fourth of a rotation and is cut olf when the piston-head has traversed ninety degrees from the abutment. The remaining pistons and cylinders are similarly equipped, the abutments being adapted to be operated successively and the steam being supplied thereto at the proper time, so that there is a constant inflow of steam, but into different cylinders. The disk 30 has two cam-grooves for operating the abutments of the pistons 12 and 13, while the disk 3l has two grooves for operating the abutments of pistons 14 and l5.

The exhausts from the several cylinders are made through the openings 48 of the split rings in the rear of the abutments, and these openings may have connection with a com mon exhaust-pipe, as will be understood.

1. A rotary engine comprising a plurality of cylinders in axial alinement and disposed in pairs, heads for the cylinders, a rotatable piston in each cylinder having a fixed head, a movable abutmentin each cylinder, a disk disposed upon the shaft between the elements of each pair of cylinders, said disks having cam-grooves, a recess in the cylinder-head adjacent each disk, a siot communicating with each recess, a pivoted arm in each recess, a rod in each slot and pivoted to the arm through the medium of a pin, said pin engaging the cam-groove of the adjacent disk, a lever pivoted upon the slotted head, connections between the lever, the rod and the abutment for operation ofthe latter, a steaminlet for the cylinder and a steam-outlet.

2. A rotary engine comprising a cylinder having heads, a shaft passed through the cylinder, a rotatable piston on the shaft within the cylinder and having a fixed head, an opening in the cylinder, a movable abutment disposed in said opening, ears upon the cylinder-head, a lever pivoted between the ears and having a slotted end embracing a pin upon the abutment, a recess in the outer face of the cylinder-head, an arm pivoted in the recess, a slot leading from the recess, a rod slidably disposed in the slot, a piu connecting the rod and arm, a head upon the rod having a recess, a head upon the lever engaging the recess of the head of the rod, and a disk upon the shaft having a cam-groove which receives said pin to move the rod and correspondingly move the abutment.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

JAMES W. CALLAWAY.

Witnesses:

-F. R. CA'rLIN,

V. A. S. 'PERPENINQ 

